如何使用 Ruby 或 Rails 从 URL 中提取 URL 参数? [英] How to extract URL parameters from a URL with Ruby or Rails?

问题描述

我有一些网址，比如

http://www.example.com/something?param1=value1&param2=value2&param3=value3

我想从这些 URL 中提取参数并将它们放入哈希中.显然，我可以使用正则表达式，但我只是想知道使用 Ruby 或 Rails 是否有更简单的方法来做到这一点.我在 Ruby 模块 URI 中没有找到任何东西，但也许我错过了一些东西.

and I would like to extract the parameters from these URLs and get them in a Hash. Obviously, I could use regular expressions, but I was just wondering if there was easier ways to do that with Ruby or Rails. I haven't found anything in the Ruby module URI but perhaps I missed something.

事实上，我需要一种方法来做到这一点:

In fact, I need a method that would do that:

extract_parameters_from_url("http://www.example.com/something?param1=value1&param2=value2&param3=value3")
#=> {:param1 => 'value1', :param2 => 'value2', :param3 => 'value3'}

你有什么建议吗?

推荐答案

我认为您想将任何给定的 URL 字符串转换为 HASH?

I think you want to turn any given URL string into a HASH?

你可以试试http://www.ruby-doc.org/stdlib/libdoc/cgi/rdoc/classes/CGI.html#M000075

require 'cgi'

CGI::parse('param1=value1&param2=value2&param3=value3')

返回

{"param1"=>["value1"], "param2"=>["value2"], "param3"=>["value3"]}

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